7281605540228 has 24 divisors (see below), whose sum is σ = 12771633236544. Its totient is φ = 3632569351200.

The previous prime is 7281605540191. The next prime is 7281605540233. The reversal of 7281605540228 is 8220455061827.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15574793 + ... + 16035503.

It is an arithmetic number, because the mean of its divisors is an integer number (532151384856).

Almost surely, 2^{7281605540228} is an apocalyptic number.

It is an amenable number.

7281605540228 is a deficient number, since it is larger than the sum of its proper divisors (5490027696316).

7281605540228 is a wasteful number, since it uses less digits than its factorization.

7281605540228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469643 (or 469641 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 7281605540228 in words is "seven trillion, two hundred eighty-one billion, six hundred five million, five hundred forty thousand, two hundred twenty-eight".